import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.util.Vector;
import interactors.*;

/**
 * A sample application that shows how to use an interactor. The application
 * creates 10 blue rectangles and registers them with a move interactor. The
 * move interactor allows the blue rectangles to be moved anywhere in the 
 * window.
 */

class MoveApplication extends JPanel {
    JFrame window = new JFrame();

    static final int RECT_HEIGHT = 50;
    static final int RECT_WIDTH = 100;
    static final int V_SPACING = 20;

    // list of movable rectangles
    Vector<RectShape> movableObjs = new Vector<RectShape>();

    // RectShape objects will store their color--inefficient storage-wise but
    // convenient and simplifies the paintComponent code
    class RectShape extends Rectangle {
	Color color;
	RectShape(int left, int top, int wd, int ht, Color c) {
	    super(left, top, wd, ht);
	    color = c;
	}
    }

    public MoveApplication() {
	int i;

	// create an interactors event handler for this JPanel and attach
	// it to the JPanel
	EventHandler evtHandler = new EventHandler(this);

	MoveInteractor moveInter = new MoveInteractor(MouseEvent.MOUSE_PRESSED,
						      MouseEvent.MOUSE_RELEASED);

	// create 10 movable rectangles and register them with the
	// move interactor
	for (i = 0; i < 10; i++) {
	    RectShape newRect = new RectShape(10, 10+(i*(RECT_HEIGHT+V_SPACING)),
					      RECT_WIDTH, RECT_HEIGHT, 
					      Color.BLUE);
	    movableObjs.add(newRect);
	    moveInter.add(newRect);
	}

	// register the move interactor with the event handler
	evtHandler.addInteractor(moveInter);

	window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	window.setContentPane(this);
	window.pack();
	window.setVisible(true);
    }
    public Dimension getPreferredSize() { 
	return new Dimension(400, (RECT_HEIGHT + V_SPACING) * 12); 
    }
    public Dimension getMinimumSize() { return getPreferredSize(); }

    public void paintComponent(Graphics g) {
	Graphics2D g2 = (Graphics2D)g;
	Color saveColor = g.getColor();

	super.paintComponent(g);

	// draw the rectangles on the screen
	for (RectShape r : movableObjs) {
	    g2.setColor(r.color);
	    g2.fill(r);
	}
	g2.setColor(saveColor);
    }

    public static void main(String args[]) {
	javax.swing.SwingUtilities.invokeLater(new Runnable() {
		public void run() {
		    new MoveApplication();
		}
	    });
    }
}